Quidway AR 28 Series Routers Installation Manual.pdf - Index of

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Installation ManualQuidway AR 28 Series RoutersChapter 3 Installation Preparation• When observing or removing the uninstalled circuit board, please touch the edgeof the circuit board, and avoid contacting the devices on it.3.1.4 Requirements on Electromagnetic EnvironmentThe interference sources, no matter where they come from, affect the routers withcapacitance coupling, inductance coupling, radiation of electromagnetic wave,common impedance (including the grounding system) or conducting line (power line,signal line and transmission line etc.).So the following should be considered:• Take effective measures to prevent the power system from being interfered withby the power grid system.• Keep the router far away from the radio launcher, radar launcher, andhigh-frequency devices working in high currents.• Use electromagnetic shielding when necessary.3.1.5 Requirements on Preventing LightningAlthough many measures have been taken to protect AR 28-30/28-31/28-40/28-80Series from lightning, if the lightning intensity exceeds a certain range, damage to therouter may still happen. To protect the router from lightning better, the following shouldbe considered:• Ensure the PGND wire of the chassis is well grounded.• Ensure the ground point of the socket of AC power supply is well grounded.• To enhance the lightning protection capability of the power supply, a lightningarrester could be installed at the input end of the power supply.• As for the signal line outdoors to which the interface modules of AR 28 Seriesrouters are connected, such as ISDN line, telephone line, E1/T1 line, etc, a speciallightning arrester should be installed at the input end of the signal line to enhancethe lightning protection capability.3.1.6 Requirements on WorkbenchNo matter whether you are to install the router in the cabinet or directly place it on theworkbench, it is necessary to ensure that:• There is spacing reserved at the air inlet and outlet in the router so as to facilitatethe radiation of the router cabinet.• The cabinet and workbench have good radiation systems.• The cabinet and workbench are firm enough to support the router and otherinstallation accessories.• The cabinet and workbench are well grounded.3-3
Installation ManualQuidway AR 28 Series RoutersChapter 3 Installation Preparation3.2 PrecautionsRouters play a key role in data communications network. Please pay attention to thefollowing:Warning:It indicates that this operation is incorrect and may seriously damage the router or endanger the operator.Please follow the correct operation procedures for sake of safety.Caution:It indicates that during the installation and usage of the router, the operation needs attention. Thisoperation is incorrect and perhaps will affect the normal operation of the router.Please follow the following safety recommendations during the installation and use ofthe router:• Keep the router away from any wet place or heat source.• Make sure that the router is normally grounded.• Please wear an ESD-preventive wrist strap before installation , and make sure oneend of it well contacts your skin, and the other end is well grounded.• Do not hot swap the interface modules of the router and any cable.• Correctly connect the interface cable for the router. Do not connect the telephonecable (including the ISDN cable) to the AUX port or the console port.• Always use Uninterrupted Power Supply (UPS).3.3 Tools, Meter and DevicesI. Tools• Phillips screwdriver• Straight screwdriver• ESD-preventive wrist strapII. cables• PGND wire and power cord• Console cable3-4
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